One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,8)(5,9)(6,10)(7,13)(12,16)(14,15)(17,18,21,25,22,19,26,24)(20,27,28,31,29,23,30,32)(1,3,6,13)(2,7,10,11)(4,12,5,14)(8,15,9,16)(1,4,6,5)(2,8,10,9)(3,12,13,14)(7,15,11,16)(17,19)(18,22)(20,27)(21,24)(23,29)(25,26)(28,31)(30,32)(1,5,6,4)(2,9,10,8)(3,12,13,14)(7,15,11,16)(2,10)(7,11)(8,9)(15,16)(17,20,21,28,22,29,26,30)(18,23,25,32,19,27,24,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.